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dsp6748 dma接收数据问题



TI工程师:

        用dma接收两通道mcasp数据时,对数据做分离处理后,得到的数据每隔320个点就出现小错位,再隔640个点又出现一次错位。此时bcnt设置的正是640,改变bcnt大小不能消除此现象,请教一下这是什么原因导致的。